<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录" >
    <van-icon slot="left" name="cross" @click="$router.back()" />
    </van-nav-bar>
    <!-- /导航栏 -->

    <!-- 登录表单 -->
    <van-form ref="loginForm" @submit="onSubmit" >
      <van-field
        v-model="user.mobile"
        :rules="userFormRules.mobile"
        name="mobile"
        maxlength="11"
        required
        clearable
        placeholder="请输入手机号"
      >
        <i slot="left-icon" class="iconfont icon-shouji"></i>
      </van-field>
      <van-field
        v-model="user.code"
        type="number"
        name="code"
        :rules="userFormRules.code"
        placeholder="请输入验证码"
        required
        maxlength="6"
      >
        <i slot="left-icon" class="iconfont icon-yanzhengma"></i>
        <template #button>
          <van-count-down v-if="isCountDownShow" :time="1000*60" format="ss" @finish ="isCountDownShow=false"/>
          <van-button v-else class="send-sms-btn" round size="small" type="default" native-type="button" @click="onSendSms">获取验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit">
          登录
        </van-button>
      </div>
    </van-form>
    <!-- /登录表单 -->
  </div>
</template>
<script>
import { login, getSmsCode } from '@/api/user.js'
export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data () {
    return {
      user: {
        mobile: '13911111111',
        code: '246810'
      },
      userFormRules: {
        mobile: [{
          required: true,
          message: '手机号不能为空'
        }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式错误'
        }],
        code: [{
          required: true,
          message: '验证码不能为空'
        }, {
          pattern: /^\d{6}$/,
          message: '验证码格式错误'
        }]
      },
      isCountDownShow: false
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    // 验证码
    async onSendSms () {
      // console.log('onSendSms')
      // 1. 校验手机号
      // validate 返回一个 Promise
      try {
        await this.$refs.loginForm.validate('mobile')
        // console.log(111)
      } catch (err) {
        return console.log('验证失败', err)
      }
      // 2. 验证通过，显示倒计时
      this.isCountDownShow = true
      // 3. 请求发送验证码
      try {
        await getSmsCode(this.user.mobile)
        this.$toast('发送成功')
      } catch (error) {
        console.log(error)
        // 发送失败
        this.isCountDownShow = false
        if (error.response.status === 429) {
          this.$toast('发送太频繁了，请稍后重试')
        } else {
          this.$toast('发送失败，请稍后重试')
        }
      }
    },

    // 登录
    async onSubmit () {
      // 开始转圈圈
      this.$toast.loading({
        duration: 0, // 持续时间，0表示持续展示不停止
        forbidClick: true, // 是否禁止背景点击
        message: '登录中...' // 提示消息
      })
      try {
        const res = await login(this.user)
        if (res.status === 201) {
          this.$store.commit('setUser', res.data.data)
          // console.log('登录成功', res)
        }
        this.$toast.success('登录成功')
        this.$router.push('/')
        // 提示 success 或者 fail 的时候，会先把其它的 toast 先清除
      } catch (err) {
        if (err.response.status === 400) {
          console.log('登录失败', err)
          this.$toast.fail('登录失败，手机号或验证码错误')
        }
      }
    }
  }
}
</script>
<style scoped lang="less">
.login-container {
  .iconfont {
    font-size: 37px;
  }
  .send-sms-btn {
    // width: 152px;
    height: 46px;
    // line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}
</style>
